Add ZooKeeper support in kolla-ansible

In kolla-mesos, ZK will be used for storing information about
actions done in bootstrap.

Change-Id: Id7067a493b457cf7b73eb007852df7b13f4363b3
Partially-Implements: blueprint zookeeper

1 files changed, 66 insertions, 0 deletions

diff --git a/docker/kolla-ansible/kolla_zookeeper.py b/docker/kolla-ansible/kolla_zookeeper.py
new file mode 100644
index 000000000..da692605a
--- /dev/null
+++ b/docker/kolla-ansible/kolla_zookeeper.py
@@ -0,0 +1,66 @@
+#!/usr/bin/python
+
+#    Copyright 2015 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import contextlib
+
+import kazoo
+
+
+@contextlib.contextmanager
+def zk_connection(zk_host, zk_port):
+    zk = kazoo.client.KazooClient(hosts='{}:{}'.format(zk_host, zk_port))
+    zk.start()
+    yield zk
+    zk.stop()
+
+
+def main():
+    module = AnsibleModule(
+        argument_spec=dict(
+            zk_host=dict(required=True, type='str'),
+            zk_port=dict(required=True, type='str'),
+            path=dict(required=True, type='str'),
+            value=dict(required=False, default=None, type='str')
+        )
+    )
+
+    try:
+        zk_host = module.params.pop('zk_host')
+        zk_port = module.params.pop('zk_port')
+        path = module.params.pop('path')
+        value = module.params.pop('value')
+
+        changed = False
+        with zk_connection(zk_host, zk_port) as zk:
+            try:
+                zk.get(path)
+            except kazoo.exceptions.NoNodeError:
+                if value is None:
+                    zk.create(path)
+                else:
+                    zk.create(path, value=value.encode())
+                changed = True
+
+        module.exit_json(changed=changed)
+    except Exception as e:
+        module.exit_json(failed=True, changed=True, msg=e)
+
+
+# import module snippets
+from ansible.module_utils.basic import *
+
+if __name__ == '__main__':
+    main()